If I run winetest-200502091000-paul-mingw manually on my win98 box I get several messages "Can't parse subtests output of" for the following tests [...] just before the tests actually start.
In the first round winetest runs all the individual test executables to find out the names of subtests they contain. In case of a failure it obiously has no way to run those tests, so they are skipped. You have the freedom the run the problematic executables manually and find out more. Winetest could be massaged to include the unparsable output in the report, but it didn't seem worth it, as most of the time it means that the test doesn't apply for the given system (no such DLL installed).